Kerry
NO dumb questions here as everybody learns, some may know and not respond while
others are too scared to ask. BUT it's how we all learn. been there done that...
my 51 has a 292

it gets it's temp from the sender in the head just above the intake/exh manifold. that should have nothing to do w/ the temp switch that needs to be placed below the thermostat located in the front of the engine.
http://s67.photobucket.com/albums/h298/1951otter/?action=view&current=19A-1-1.jpg
i drilled the cast iron lower piece and tapped it for my NAPA #3750 temp, 190degree switch. this switch closes to ground when the temp reaches 190.
It's wired to 2 relays (single wire to a dual wire @ the relay single relay spades) at position #85.
#30 dual relays gets power from the battery handoff, I use this...
http://www.madelectrical.com/catalog/cn-1.shtml
http://s67.photobucket.com/albums/h298/1951otter/?action=view&current=0732700-R1-036-16A.jpg ... (notice the two into one wire at the relay spade terminal.), as my handoff using a single wire to a dual wire @ the relay spade.
# 87 dual wire @ relay spades, goes to single the fan,
# 86 dual wire @ relay spades, to single switched fused ignition power (fuse block).

read how relays work
http://www.autoshop101.com/forms/hweb2.pdf
http://www.tune-town.com/relays.pdf
http://alanhorvath.com/54chevy/mad_electrical_2.php


Last edited by carolines truck; 12/29/2008 6:55 PM.
Jim & Caroline
The highway is for gamblers, better use your good sense."
Gooday-that's my 1¢ answer due to the lousy economy ~ cause I ain't got - no . mo . doe
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